<template>
  <!--列表-->
  <div class="list-container">
    <div class="sortList clearfix">
      <div class="center">
        <!--banner轮播-->
        <div class="swiper-container banner-container" id="mySwiper">
          <div class="swiper-wrapper">
            <div class="swiper-slide" v-for="banner in bannerList" :key="banner.id">
              <img :src="banner.imgUrl" />
            </div>
          </div>
          <!-- 如果需要分页器 -->
          <div class="swiper-pagination"></div>

          <!-- 如果需要导航按钮 -->
          <div class="swiper-button-prev"></div>
          <div class="swiper-button-next"></div>
        </div>
      </div>
      <div class="right">
        <div class="news">
          <h4>
            <em class="fl">尚品汇快报</em>
            <span class="fr tip">更多 ></span>
          </h4>
          <div class="clearix"></div>
          <ul class="news-list unstyled">
            <li>
              <span class="bold">[特惠]</span>备战开学季 全民半价购数码
            </li>
            <li>
              <span class="bold">[公告]</span>备战开学季 全民半价购数码
            </li>
            <li>
              <span class="bold">[特惠]</span>备战开学季 全民半价购数码
            </li>
            <li>
              <span class="bold">[公告]</span>备战开学季 全民半价购数码
            </li>
            <li>
              <span class="bold">[特惠]</span>备战开学季 全民半价购数码
            </li>
          </ul>
        </div>
        <ul class="lifeservices">
          <li class=" life-item ">
            <i class="list-item"></i>
            <span class="service-intro">话费</span>
          </li>
          <li class=" life-item ">
            <i class="list-item"></i>
            <span class="service-intro">机票</span>
          </li>
          <li class=" life-item ">
            <i class="list-item"></i>
            <span class="service-intro">电影票</span>
          </li>
          <li class=" life-item ">
            <i class="list-item"></i>
            <span class="service-intro">游戏</span>
          </li>
          <li class=" life-item">
            <i class="list-item"></i>
            <span class="service-intro">彩票</span>
          </li>
          <li class=" life-item">
            <i class="list-item"></i>
            <span class="service-intro">加油站</span>
          </li>
          <li class=" life-item">
            <i class="list-item"></i>
            <span class="service-intro">酒店</span>
          </li>
          <li class=" life-item">
            <i class="list-item"></i>
            <span class="service-intro">火车票</span>
          </li>
          <li class=" life-item ">
            <i class="list-item"></i>
            <span class="service-intro">众筹</span>
          </li>
          <li class=" life-item">
            <i class="list-item"></i>
            <span class="service-intro">理财</span>
          </li>
          <li class=" life-item">
            <i class="list-item"></i>
            <span class="service-intro">礼品卡</span>
          </li>
          <li class=" life-item">
            <i class="list-item"></i>
            <span class="service-intro">白条</span>
          </li>
        </ul>
        <div class="ads">
          <img src="./images/ad1.png" />
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import 'swiper/css/swiper.min.css'
import Swiper from 'swiper'
import { mapActions, mapState } from 'vuex'
export default {
  name: 'ListContainer',
  data() {
    return {}
  },
  computed: {
    // 从vuex中映射过来的state中的数据，就相当于是当前组件中的data中的数据，可以直接使用
    ...mapState('home', ['bannerList'])
  },
  mounted() {
    // 以下代码是一个原始的写法
    // this.$store.dispatch('home/getBannerListData')
    this.getBannerListData()

    // 图片的请求及加载到页面都是需要时间的 Vue框架对于页面数据的渲染是异步的

    // 启用轮播图  如果直接用如下的写法，会导致有可能页面中的图片并没有完全加载完毕
    // setTimeout(() => {
    //   new Swiper('.banner-container', {
    //     // direction: 'vertical', // 垂直切换选项
    //     loop: true, // 循环模式选项
    //     // autoplay: true,//等同于以下设置
    //     autoplay: {
    //       delay: 1000,
    //       stopOnLastSlide: false,
    //       disableOnInteraction: true
    //     },
    //     // 如果需要分页器
    //     pagination: {
    //       el: '.swiper-pagination'
    //     },

    //     // 如果需要前进后退按钮
    //     navigation: {
    //       nextEl: '.swiper-button-next',
    //       prevEl: '.swiper-button-prev'
    //     }
    //   })
    // }, 1000)
  },
  watch: {
    bannerList() {
      // 只要这个数据一旦发生了变化，就会执行这里面的代码
      // bannerList数据是由Vuex映射过来的，前期是空数组，当请求完成之后里面就会有新数据
      // 页面中图片的渲染也是需要时间的，而且Vue框架渲染页面数据是异步的，所以也需要时间
      this.$nextTick(() => {
        new Swiper('.banner-container', {
          // direction: 'vertical', // 垂直切换选项
          loop: true, // 循环模式选项
          // autoplay: true,//等同于以下设置
          autoplay: {
            delay: 1000,
            stopOnLastSlide: false,
            disableOnInteraction: true
          },
          // 如果需要分页器
          pagination: {
            el: '.swiper-pagination',
            clickable:true  // 单击小圆点也可以实现切换
          },

          // 如果需要前进后退按钮
          navigation: {
            nextEl: '.swiper-button-next',
            prevEl: '.swiper-button-prev'
          }
        })
      })
    }
  },
  // updated(){
  //      new Swiper('.banner-container', {
  //       // direction: 'vertical', // 垂直切换选项
  //       loop: true, // 循环模式选项
  //       // autoplay: true,//等同于以下设置
  //       autoplay: {
  //         delay: 1000,
  //         stopOnLastSlide: false,
  //         disableOnInteraction: true
  //       },
  //       // 如果需要分页器
  //       pagination: {
  //         el: '.swiper-pagination'
  //       },

  //       // 如果需要前进后退按钮
  //       navigation: {
  //         nextEl: '.swiper-button-next',
  //         prevEl: '.swiper-button-prev'
  //       }
  //     })
  // },
  methods: {
    // 从Vuex中映射过来的方法，就相当是当前组件中的methods中的方法
    ...mapActions('home', ['getBannerListData'])
  }
}
</script>

<style lang="less" scoped>
.list-container {
  width: 1200px;
  margin: 0 auto;

  .sortList {
    height: 464px;
    padding-left: 210px;

    .center {
      box-sizing: border-box;
      width: 740px;
      height: 100%;
      padding: 5px;
      float: left;
    }

    .right {
      float: left;
      width: 250px;

      .news {
        border: 1px solid #e4e4e4;
        margin-top: 5px;

        h4 {
          border-bottom: 1px solid #e4e4e4;
          padding: 5px 10px;
          margin: 5px 5px 0;
          line-height: 22px;
          overflow: hidden;
          font-size: 14px;

          .fl {
            float: left;
          }

          .fr {
            float: right;
            font-size: 12px;
            font-weight: 400;
          }
        }

        .news-list {
          padding: 5px 15px;
          line-height: 26px;

          .bold {
            font-weight: 700;
          }
        }
      }

      .lifeservices {
        border-right: 1px solid #e4e4e4;
        overflow: hidden;
        display: flex;
        flex-wrap: wrap;

        .life-item {
          border-left: 1px solid #e4e4e4;
          border-bottom: 1px solid #e4e4e4;
          margin-right: -1px;
          height: 64px;
          text-align: center;
          position: relative;
          cursor: pointer;
          width: 25%;

          .list-item {
            background-image: url(./images/icons.png);
            width: 61px;
            height: 40px;
            display: block;
          }

          .service-intro {
            line-height: 22px;
            width: 60px;
            display: block;
          }

          &:nth-child(1) {
            .list-item {
              background-position: 0px -5px;
            }
          }

          &:nth-child(2) {
            .list-item {
              background-position: -62px -5px;
            }
          }

          &:nth-child(3) {
            .list-item {
              background-position: -126px -5px;
            }
          }

          &:nth-child(4) {
            .list-item {
              background-position: -190px -5px;
            }
          }

          &:nth-child(5) {
            .list-item {
              background-position: 0px -76px;
            }
          }

          &:nth-child(6) {
            .list-item {
              background-position: -62px -76px;
            }
          }

          &:nth-child(7) {
            .list-item {
              background-position: -126px -76px;
            }
          }

          &:nth-child(8) {
            .list-item {
              background-position: -190px -76px;
            }
          }

          &:nth-child(9) {
            .list-item {
              background-position: 0px -146px;
            }
          }

          &:nth-child(10) {
            .list-item {
              background-position: -62px -146px;
            }
          }

          &:nth-child(11) {
            .list-item {
              background-position: -126px -146px;
            }
          }

          &:nth-child(12) {
            .list-item {
              background-position: -190px -146px;
            }
          }
        }
      }

      .ads {
        margin-top: 5px;

        img {
          opacity: 0.8;
          transition: all 400ms;

          &:hover {
            opacity: 1;
          }
        }
      }
    }
  }
}
</style>